#  Copyright (c) ZenML GmbH 2023. All Rights Reserved.
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at:
#
#       http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
#  or implied. See the License for the specific language governing
#  permissions and limitations under the License.

import json

import numpy as np  # type: ignore [import]
from typing_extensions import Annotated

from zenml import step


@step
def sklearn_predict_preprocessor(input: np.ndarray) -> Annotated[str, "data"]:
    """Prepares the data for inference."""
    input = input / 255.0
    input = input.reshape((input.shape[0], -1))
    request = input.tolist()
    return json.dumps(request)
